CVE-2021-20865 : What You Need to Know

Advanced Custom Fields versions prior to 5.11 and Advanced Custom Fields Pro versions prior to 5.11 contain a missing authorization vulnerability that may allow unauthorized data browsing. Learn more about the impact, technical details, and mitigation steps below.

Understanding CVE-2021-20865

This CVE identifies a missing authorization vulnerability in browsing databases in Advanced Custom Fields and Advanced Custom Fields Pro versions prior to 5.11. The vulnerability could potentially enable a user to access unauthorized data through unspecified vectors.

What is CVE-2021-20865?

CVE-2021-20865 refers to a security flaw present in Advanced Custom Fields and Advanced Custom Fields Pro versions before 5.11. The vulnerability allows users to browse data without proper authorization, potentially leading to unauthorized access.

The Impact of CVE-2021-20865

The missing authorization vulnerability in Advanced Custom Fields and Advanced Custom Fields Pro versions prior to 5.11 poses a significant risk. Attackers could exploit this flaw to access sensitive data without proper permissions, compromising data confidentiality and integrity.

Technical Details of CVE-2021-20865

Here are the technical aspects associated with CVE-2021-20865:

Vulnerability Description

The vulnerability in Advanced Custom Fields and Advanced Custom Fields Pro versions prior to 5.11 arises from inadequate authorization controls in database browsing functionalities. This allows users to view unauthorized data through unspecified attack vectors.

Affected Systems and Versions

Systems running Advanced Custom Fields and Advanced Custom Fields Pro versions prior to 5.11 are susceptible to this vulnerability. Users of these versions are urged to take immediate action to safeguard their data.

Exploitation Mechanism

The exploitation of CVE-2021-20865 involves leveraging the missing authorization flaw in the database browsing feature of the affected Advanced Custom Fields versions. Threat actors can exploit this weakness to access restricted data.

Mitigation and Prevention

It is crucial to address CVE-2021-20865 promptly to protect your systems. Follow these steps to mitigate the risk and enhance security:

Immediate Steps to Take

Upgrade to the latest versions of Advanced Custom Fields and Advanced Custom Fields Pro to patch the vulnerability.
Restrict access to sensitive data and ensure proper authorization controls are in place.

Long-Term Security Practices

Regularly monitor for security updates and apply patches promptly to prevent exploitation of known vulnerabilities.

Patching and Updates

Stay informed about security advisories from Delicious Brains and apply updates as soon as they are available to maintain a secure environment.